Is Roof Sheathing Required

Rafters run from the peak of the roof.

Is roof sheathing required.

Add purlins on top of this for venting and drainage then add horizontal purlins to mount the metal roof to. If your roofing contractor is doing a reroof which is where the new roof is applied over the existing roof the upgrade of the sheathing is not required. The typical thickness range for sheathing is 3 8 to 3 4 inch. Sheathing should be a minimum of 19 32 inch thick.

They only apply for roof replacement where the previous roof is completely removed down to the sheathing. Terrell you can build a roof without sheathing. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. 8d ring shank nails should be used instead.

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Use the reinforced solitex mento plus roof underlayment on top of your rafters. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. Solid sheathing required for wood roofs in high wind areas.

Solid sheathing is also recommended in areas subject to windblown snow. Table r803 2 3 1 specifies the maximum fastener. Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. But it s just a one time reprieve.

The minimum plywood for roofing. Roof sheathing or decking is one of those elements. The rsrs designation indicates the fastener is a ring shank roof sheathing nail. This is required in areas of high wind or seismic activity and wherever else a solid roof diaphragm is required by code.

Do need to rack the house with sheathing on walls or cross bracing. H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips. R905 8 2 deck slope wood shakes shall only be used on slopes of three units vertical in 12 units horizontal 25 percent slope or greater. A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather.

Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.